Seachem Alert Combo Pack Options:6 Months For herbivorous marine and freshwater

For herbivorous marine and freshwater fish including large tangs and surgeonfish

High-porosity 20PPI mechanical foam for improved filtering capability

To be grown on a root or stone

Gravel modifiers such as laterite are not necessary for the success of this gravel

They are quite high in Calcium

Seachem Alert Combo Pack Options:6 Months For herbivorous marine and freshwaterNo strips, no tests, just constant readings; it's every aquarium owner's dream! Now Ammonia Alert and pH Alert come together in one convenient package, The durable and effective cards employ top of the line Seachem Sensor Technology in which a dedicated sensor changes color reversibly to alert you to even the smallest shifts in ammonia and pH levels respectively. Simply place the sensor cards anywhere inside of the aquarium or filter, but make sure it